Washing machine

Abstract

A washing machine including a cabinet, a tub arrangeable inside the cabinet, and a detergent supply device configured to supply a detergent to the tub, wherein the detergent supply device includes a housing coupleable to the cabinet, a case insertable into the housing or drawn out from the housing, and a detergent container coupleable to and decoupleable from the case such that while the detergent container is coupled to the case, the detergent container is insertable into the housing or drawn out from the housing along with the case.

What is claimed is: 
     
         1 . A washing machine comprising:
 a cabinet;   a tub arrangeable inside the cabinet; and   a detergent supply device configured to supply a detergent to the tub,   wherein the detergent supply device comprises:
 a housing coupleable to the cabinet; 
 a case insertable into the housing or drawn out from the housing; and 
 a detergent container coupleable to and decoupleable from the case such that while the detergent container is coupled to the case, the detergent container is insertable into the housing or drawn out from the housing along with the case. 
   
     
     
         2 . The washing machine according to  claim 1 , wherein
 the detergent supply device comprises a stirring device coupleable to the detergent container such that the stirring device is rotatable while coupled to the detergent container.   
     
     
         3 . The washing machine according to  claim 2 , wherein
 the detergent container comprises a siphon tube to which the stirring device is coupleable such that the stirring device is rotatable while coupled to the siphon tube, the siphon tube forms a flow path to discharge water from the detergent container together with the stirring device.   
     
     
         4 . The washing machine according to  claim 3 , wherein
 the siphon tube has a height lower than a side wall of the detergent container.   
     
     
         5 . The washing machine according to  claim 3 , wherein
 a bottom surface of the detergent container has a portion inclined downward toward the siphon tube.   
     
     
         6 . The washing machine according to  claim 2 , wherein
 the stirring device is rotatable by water supplied to the detergent supply device.   
     
     
         7 . The washing machine according to  claim 1 , wherein
 the detergent supply device comprises a nozzle device to supply water from a rear of the case toward a front of the case.   
     
     
         8 . The washing machine according to  claim 7 , wherein
 the nozzle device comprises:
 a washing water inlet hole into which water is introduced; 
 an air inlet hole into which air is introduced; and 
 a nozzle outlet to guide the water introduced through the washing water inlet hole to an inside of the case. 
   
     
     
         9 . The washing machine according to  claim 7 , wherein
 the nozzle device is disposed to be spaced apart from a center of a rear wall of the case to one side.   
     
     
         10 . The washing machine according to  claim 7 , wherein
 the case includes a case outlet to discharge the detergent from the detergent supply device, the case outlet being positioned on one side of the rear of the case, and   the nozzle device is positioned on another side opposite to the one side of the rear of the case where the case outlet is positioned.   
     
     
         11 . The washing machine according to  claim 1 , wherein
 the detergent container comprises a guide rib protruding from an outer surface thereof to be supported by an inner wall of the case while the detergent container is coupled to the case.   
     
     
         12 . The washing machine according to  claim 1 , wherein
 the case comprises a case outlet communicating with the tub and a case bottom surface formed to be inclined downward toward the case outlet, and   the detergent container comprises guide protrusions protruding toward the case bottom surface to be supported on the case bottom surface and having different lengths.   
     
     
         13 . The washing machine according to  claim 12 , wherein
 the guide protrusions comprise a first guide protrusion and a second guide protrusion positioned at a rear of the first guide protrusion and formed to be longer than the first guide protrusion.   
     
     
         14 . The washing machine according to  claim 1 , wherein
 the case comprises a detergent containing space to contain the detergent or to seat the detergent container.   
     
     
         15 . The washing machine according to  claim 1 , wherein
 the case comprises a detergent containing space and a softener containing space separated from the detergent containing space, and   the detergent container is coupleable to and decoupleable from the detergent containing space.